Scarves

In honor of the upcoming "Play With Friends" Minecraft update, I thought I'd make my own.

In this version, it's easier than ever to define new Fabric Squares, provide or process pre-rolled scarf design layouts, and even define new Scarf-Haver entities. Scarves have been split into two slots with one individual tail each, so you can pair up two pride flags more easily. A lot of work went in under the hood to expand scarf eligibility to new friends.

• Update to 1.21.1
• Componentize ScarfDesign and FabricSquare, so any item can count as a fabric square or a scarf design with no registration.
• Staticdata now sneaks default components onto the targeted items
• Moved scarf slot from body to head, and split into left and right slot. Each scarf has only one tail now.
• Scarf Stapler and Scarf Serger interfaces rearranged to acommodate all these changes
• The way scarves are pinned to entities has totally changed.
• Bee scarves. Fox scarves. Rightclick a friend with a scarf to place it in their scarf slot. If they're already wearing a scarf, it'll swap them. Support for more animals is coming!